SPI_CLK

SPI_DATA

DLPC100

www.ti.com

DLPS019B – DECEMBER 2009 – REVISED DECEMBER 2010

I

Data is exchanged between the master and the DLPC100 through write and read commands.

Writes

Data is transmitted to the DLPC100 by sending the device address and setting the least-significant bit to a logic

0. The data bytes are sent after the address and determines which register receives the data that follows the

address byte. Data is clocked into the register on the rising edge of the ACK clock pulse. .

Reads

The bus master first must send the DLPC100 address with the least-significant bit set to a logic 0. The read

address byte is sent after the device address and read command (x15) and the read address determines which

register is accessed. After a restart, the device address is sent again, but this time, the least-significant bit is set

to a logic 1. Data from the register defined by the read address byte then is sent by the DLPC100. See

Programmers guide for a full description of the register read/write protocol and available registers.

Flash Memory Interface

The DLPC100 controller flash memory interface consists of a SPI flash serial interface at 33.3 MHz (nominal).

FLASH INTERFACE TIMING REQUIREMENTS

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

Clock frequency, SPI_CLK

33.3266

33.34

MHz

Clock period, SPI_CLK

50% reference points

29.994

30.006

ns

Clock jitter, SPI_CLK

200

ps

Pulse width low, SPI_CLK

50% reference points

10

ns

Pulse width high, SPI_CLK

50% reference points

10

ns

Transition time – all signals

20% to 80% reference points

0.2

4

ns

Setup Time – SPI_DIN valid before SPI_CLK rising

10

ns

50% reference points

edge

Hold Time – SPI_DIN valid after SPI_CLK rising

0

ns

50% reference points

edge

SPI_CLK clock low to output valid time – SPI_DOUT

1

ns

50% reference points

& SPI_CSZ

SPI_CLK clock low output hold time – SPI_DOUT &

-1

ns

50% reference points

SPI_CSZ

(1)

This range include the 200 ppm of the external oscillator

Figure 9. Flash Memory Interface Timing

Copyright © 2009–2010, Texas Instruments Incorporated

Submit Documentation Feedback

15

Product Folder Link(s): DLPC100